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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of decrease in the fair value of derivatives recognized in the income statement.

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Nominal or face amount used to calculate payment on derivative.

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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DERIVATIVE INSTRUMENTS - Narrative (Details)	3 Months Ended		6 Months Ended
DERIVATIVE INSTRUMENTS - Narrative (Details)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2021 CHF (SFr)	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Dec. 21, 2020 USD ($)	Dec. 21, 2020 CHF (SFr)	Oct. 02, 2017 USD ($)	Oct. 02, 2017 CHF (SFr)
Derivative [Line Items]
Gain expected to be reclassified to earnings in the next twelve months	$ 4,500,000		$ 4,500,000
Designated as Hedging Instrument
Derivative [Line Items]
Total derivatives designated as hedges — Assets	24,579,000		24,579,000			$ 12,920,000
Gain (loss) recorded in AOCL, change in fair value	(25,894,000)	$ (14,853,000)	62,391,000		$ (41,695,000)
Foreign Exchange Forward \| Not Designated as Hedging Instrument
Derivative [Line Items]
Current notional amount						$ 9,700,000
Loss on foreign currency derivatives			300,000
Total derivatives designated as hedges — Assets	300,000		300,000
Cross-currency swap
Derivative [Line Items]
Current notional amount	7,300,000		7,300,000				$ 471,600,000	SFr 420,100,000
Intercompany loan quarterly payments \| SFr				SFr 5,800,000
Cross-currency swap \| Cash Flow Hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) reclassified into other income	(12,900,000)	30,000,000.0	(3,400,000)		(5,100,000)
Cross-currency swap \| Net Investment Hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) reclassified into other income	1,700,000	2,200,000	3,400,000		4,400,000
Gain (loss) recorded, net investment hedge, change in fair value	100,000	(2,500,000)	13,700,000		16,400,000
Cross-currency swap \| Codman \| Cash Flow Hedges \| Designated as Hedging Instrument
Derivative [Line Items]
Gain (loss) recorded in AOCL, change in fair value	(11,000,000.0)	29,200,000	(2,300,000)		3,600,000
Gain (loss) reclassified into other income	1,300,000	$ 1,500,000	2,500,000		$ 3,000,000.0
Gain expected to be reclassified to earnings in the next twelve months	$ 7,000,000.0		$ 7,000,000.0
Cross-currency swap \| Short \| Codman
Derivative [Line Items]
Current notional amount									$ 300,000,000.0
Cross-currency swap \| Long \| Codman
Derivative [Line Items]
Current notional amount \| SFr										SFr 291,200,000